Tox: Allow wildcards to be used in TOXENV and with the `-e` option

[pytoxbot]

• Bitbucket: https://bitbucket.org/hpk42/tox/issue/318
• Originally reported by: @edmorley
• Originally created at: 2016-02-29T19:22:48.912

Currently it's not possible to use wildcards with TOXENV and/or the -e option.

For example, I'd like to be able to use:

export TOXENV=py27-*

... to just run the python 2.7 subset of the peep tox config:
https://github.com/erikrose/peep/blob/daa9e87014de1f907fac446f89b9d849665a649e/tox.ini#L8-L9

However since wildcards aren't supported, I've had to resort to a bit of a hack to generate the TOXENV in the Travis config:

export TOXENV=`tox --listenvs | grep "py${TRAVIS_PYTHON_VERSION/./}-" | tr '\n' ','`

See:
https://github.com/edmorley/peep/commit/bb77b96dfd548dd3ba9ac1c595c047dbd3e7f8a9

Many thanks :-)

[pytoxbot]

Original comment by @eli-collins

If it helps, attached is the quick-n-dirty helper script that I've been using to solve a similar problem. Usage is toxmatch.py <FACTORS>

[pytoxbot]

Original comment by @eli-collins

Instead of a -f FACTOR option, perhaps if it was implemented so that -f simply changed the behavior of -e and -l to do factor matching? That way it would be possible to use -fl FACTOR to see what environments _would_ be run by -fe FACTOR.

If that were also combined with some flag to make -l output a single-line csv (e.g. "--list-csv"), It would also make Ed's environment string reduce to export TOXENV='tox --list-csv -fl py${TRAVIS_PYTHON_VERSION/./}'

[pytoxbot]

Original comment by @edmorley

Sorry for the delay in replying. Agree that due to TOXENV wildcarding may be the better solution. I've not had a spare moment yet, but will try to double back to this at some point.

I've also spotted there's a dupe issue #22, albeit there's less discussion there, so might be worth forward-duping.

[pytoxbot]

Original comment by @hpk42

As far as command line options go i'd rather like a -f FACTOR option to select all env names which have the factor. True enough, that wouldn't help with TOXENV so maybe wildcarding is the more general solution. Are you up for a PR with tests and docs that introduces wildcard-matching (fnmatch-style) for -e and TOXENV?

[eli-collins]

Since this issue got moved to git, I'm reuploading the script I've been using, if anyone finds it useful (as code source, or just as is):
toxmatch.py -- https://gist.github.com/eli-collins/ef91add2bc635ccaf61738cd805cb18b

[anentropic]

this would be great

[rpkilby]

I've created tox-factor, which allows for matching on specific factors. So, instead of

tox -e py37-*

you would run

tox -f py37

or

TOXFACTOR=py37 tox